Tamper evident containers with lid tabs

ABSTRACT

A tamper-evident container can include a base and a lid. Each of the base and the lid can include a flange having a free edge that defines at least a portion of an outermost perimeter of the base or lid, respectively. The lid can include a tab that has an upper surface and a lower surface opposite the upper surface and a weakened region that borders a portion of the tab. When the lid is coupled to the base in a closed pre-use configuration, the lower surface of the tab is accessible from a lateral side of the container. The tab can be partially separated from a neighboring portion of the lid flange along the weakened region yet remain coupled with the lid and assist in uncoupling the lid from the base.

RELATED APPLICATION AND DESCRIPTION OF THE RELATED ART

This application claims priority to Provisional Application No. 61/968,985 titled TAMPER EVIDENT CONTAINERS WITH LID TABS, which was filed on Mar. 21, 2014. Application No. 61/968,985 is incorporated by reference. This application also incorporates by reference U.S. patent application Ser. No. 13/681,017, which was filed on Nov. 19, 2012 and is titled TAMPER EVIDENT CONTAINERS.

BACKGROUND OF THE INVENTION Field of the Invention

The present disclosure relates to tamper evident containers.

BRIEF DESCRIPTION OF THE DRAWINGS

The written disclosure herein describes illustrative embodiments that are non-limiting and non-exhaustive. Reference is made to certain of such illustrative embodiments that are depicted in the figures, in which:

FIG. 1 is a perspective view of an embodiment of a tamper evident container in a closed pre-use configuration.

FIG. 2 is a perspective view of the tamper evident container of FIG. 1 in a closed configuration with the lid tab lifted such that it is partially separated from the lid and is ready to be grasped to open the container by lifting the lid away from the base.

FIG. 3 is a perspective view of the tamper evident container of FIG. 1 in an open configuration with the lid pivoted away from the base.

FIG. 4 is a perspective view of the tamper evident container of FIG. 1 that has been closed after being opened and with the lid tab and the indicator tab pivoted upward to show that the container has been opened.

FIG. 5 is a perspective view of the tamper evident container of FIG. 1 that has been closed after being opened and the lid tab bent back into shape but with the indicator tab still pivoted upward to show that the container has been opened.

FIG. 6 is a side view of the tamper evident container of FIG. 1 that has been closed after being opened and the lid tab and the indicator tab are still pivoted upward to show that the container has been opened.

FIG. 7 is a plan view of the tamper evident container of FIG. 1 in an open preloading configuration.

FIG. 7A is an enlarged plan view of a lid tab, an indicator tab, and a portion of a lid of the container of FIG. 1, taken along the view line 7A in FIG. 7.

FIG. 8A is a cross-sectional view of a portion of the tamper evident container of FIG. 1 taken along the view line 8A-8A in FIG. 1.

FIG. 8B is a cross-sectional view of another portion of the tamper evident container of FIG. 1 taken along the view line 8B-8B in FIG. 1.

FIG. 9 is a diagram that shows the material strain of the indicator tab as the lid tab is pulled and pivoted and also the force applied amount of force required to deform the indicator legs of the lid tab and the amount of force to dislodge the lid from the base to open the container.

FIG. 10 is a perspective view of another embodiment of a tamper evident container in a closed pre-use configuration that differs from the embodiment shown in FIG. 1 based on the lack of an indicator tab.

FIG. 11 is a perspective view of the tamper evident container of FIG. 10 in a closed configuration with the lid tab lifted such that it is partially separated from the lid and is ready to be grasped to open the container by lifting the lid away from the base.

FIG. 12 is a perspective view of the tamper evident container of FIG. 10 in an open configuration with the lid pivoted away from the base.

FIG. 13 is a diagram that shows the material strain of the lid tab when the container is opened by pulling and pivoting the lid tab to overcome the lip seal of the lid and the base and also shows the material strain when the lid is opened again after being closed. The diagram also shows the force applied to the lid tab to release the lid from the base at the lip seal.

FIG. 14 is a perspective view of another embodiment of a tamper evident container, which differs from the embodiment shown in FIG. 1 as it has a lid tab that is colored and has a different shape

FIG. 14A is an enlarged perspective view of a lid tab, an indicator tab, and a portion of a lid of the container of FIG. 14, taken along the view line 14A in FIG. 14.

FIG. 14B is an enlarged perspective view of the tamper evident container of FIG. 14B taken along the view line 14A in FIG. 14 showing the lid opened pivoted and ready to be pulled to open the container by pivoting the lid away from the base.

FIG. 14C is an enlarged perspective view of the tamper evident container as shown in FIG. 14B viewed at a different angle.

FIG. 15 is a perspective view of the tamper evident container of FIG. 14 in an open configuration with the lid pivoted away from the base and ready to be closed again.

FIG. 16 is a perspective view of the tamper evident container of FIG. 14 that has been closed after being opened and the lid tab bent back into shape but with the indicator tab still pivoted upward to show that the container has been opened.

FIG. 16A is an enlarged perspective view of the tamper evident container of FIG. 16 taken along the view line 16A in FIG. 16

FIG. 17 is a plan view of the tamper evident container of FIG. 14 in an open preloading configuration.

FIG. 17A is an enlarged plan view of a lid tab, an indicator tab, and a portion of a lid of the container of FIG. 17, taken along the view line 17A in FIG. 17.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The embodiments disclosed herein relate to containers that may be used, for example, in the food industry. In particular, certain embodiments disclosed herein relate to tamper evident containers that may be used for storing and/or transporting food products. It will be readily understood that the components of the present disclosure, as generally described and illustrated in the drawings herein, could be arranged and designed in a wide variety of different configurations. Thus, the following more detailed description of the embodiments is not intended to limit the scope of the disclosure, but is merely representative of possible embodiments of the disclosure. While various aspects of certain embodiments are presented in drawings, the drawings are not necessarily drawn to scale.

Certain embodiments can advantageously be supplied to an intermediary user in an open preloading configuration (e.g., FIG. 6). The intermediary user can load the container with any desired item, such as a food product, and can then close the container into a closed pre-use configuration (e.g., FIG. 1). When in this state, the container can be resistant to opening at any region other than an opening region, which can be provided with a tamper evident tab. Accordingly, in some embodiments, an end user can ultimately access the packaged contents of the container using the tamper evident tab. The tab can be pulled to assist in separating primary components of the container (e.g., a lid and a base) from each other. The tab can remain coupled with one of the primary components of the container (e.g., the lid), but can be partially separated from a neighboring region thereof in such a way as to indicate that the tab has been used (e.g., FIG. 4). As the tab is pulled further, the package can be opened from the pre-use configuration into an open post-use configuration (e.g., FIG. 3). Further details of embodiments of tamper evident containers are provided below.

FIG. 6 depicts an embodiment of a tamper evident container 100 shown in an open preloading configuration. As illustrated in FIGS. 1-6A, the container 100 can include a base 110 and a lid 130. In some embodiments, the base 110 and the lid 130 may be connected or otherwise adjoined to one another. For example, the base 110 and the lid 130 may be connected via a hinged portion or hinge 105. In some embodiments, the base 110, the lid 130, and the hinge 105 may be integrally formed from a unitary piece of material. For example, in some embodiments the container 100 is formed from a single piece of thermoformed plastic. In other embodiments, the base 110 and the lid 130 may not be connected to one another at all; rather, the base 110 and the lid 130 may each comprise individual and fully separable components.

As shown in FIG. 1, the base 110 may include a bottom end 112. The bottom end 112 can have any suitable shape and configuration. For example, in some embodiments at least a portion of the bottom end 112 is substantially planar. In the illustrated embodiment, the bottom end 112 includes a contact surface 111 and a raised platform 113. At least a portion of the contact surface 111 may be substantially planar such that the base 110 may readily rest upon a planar surface. The raised platform 113 may be upwardly offset relative to the contact surface 111. Other suitable configurations for the bottom end 112 are also contemplated.

The base 110 may further include a sidewall 114 that extends upwardly from the bottom end 112. The bottom end 112 and the sidewall 114 can cooperate to define a cavity 116. The base 110 may be generally bowl-shaped, although other shapes and configurations are possible. In some embodiments, the sidewall 114 may extend upwardly in a substantially vertical manner that it is substantially perpendicular to the bottom end 112. In other embodiments, the sidewall 114 may extend upwardly and may be angled radially outwardly. For example, the sidewall 114 may extend upwardly in a radially outward direction at an angle of about 5 degrees to about 10 degrees, or from about 5 degrees to about 15 degrees. In yet other embodiments, the sidewall 114 may extent upwardly in a curved or arcuate manner. Accordingly, as can be appreciated, the sidewall 114 may extend upwardly in a variety of ways depending on the desired shape and characteristics of the container 100.

The sidewall 114 may be substantially uniform or flat, or it may comprise one or more features for reinforcement, grip assistance, etc. For example, in the illustrated embodiment, the sidewall 114 comprises a plurality of substantially vertically oriented ribs 115. The ribs 115 may provide the base 110 with strength and/or may augment its rigidity.

The base 110 of the container 100 may further comprise a base connection interface 118 disposed at an upper end of the sidewall 114. The base connection interface 118 may be configured to interact with portion the lid 130 so as to close the container 100, as further discussed below. In some embodiments, the base connection interface 118 may extend about at least a majority of a periphery of the sidewall 114. For example, in various embodiments, the base connection interface 118 may extend about at least ½, ⅔, or ¾ of a total periphery of the upper end of the sidewall 114. In further embodiments, the base connection interface 118 may extend about an entirety of the periphery of the sidewall 114. In yet other embodiments, the base connection interface 118 may extend around a smaller portion of the sidewall 114.

A base flange 120 can extend outwardly relative to the base connection interface 118. The base flange 120 may be directly connected to or otherwise coupled with an upper end of the base connection interface 118. Accordingly, the base flange 120 may be configured such that it is at a higher position than is base connection interface 118, as compared with to the bottom end 112. In the illustrated embodiment, the base flange 120 is positioned at an upper end of the base connection interface 118, and the base flange 120 extends radially outwardly in a horizontal direction from the base connection interface 118 (see also FIG. 3). In other embodiments, the base flange 120 may be at about the same height, or may be lower than, the connection interface 118 relative to the bottom end 112.

At least a portion of the base flange 120 can be flat or planer. For example, in the illustrated embodiment, the base flange 120 defines a plane that is parallel to the plane defined by the bottom end 112. The planar portion of the base flange 120 may extend about at least a majority of the perimeter of the base. In some embodiments, at least a majority of the base flange 120 may be substantially planar. In yet other embodiments, only a portion of the base flange 120 may be substantially planar.

In other embodiments, the base flange 120 may have configurations that are non-planar and/or multi-planar. For example, the base flange 120 may extend upwardly at an angle relative to a horizontal plane (e.g., at an angle no less than about 30, 45, 60, or 75 degrees). Depending on the shape of the container, the base flange 120 may have substantially planar regions, substantially conical regions, and or regions that define other shapes. For example, where the base flange 120 extends upwardly at a constant angle along the periphery of the container 100 at each radial position, and the container is substantially rectangular, the upwardly extending flange 120 may define a different plane along each of the linear regions of the rectangle, and the flange 120 may define substantially conical regions at the corners that connect adjacent planar regions. As another example, where the base flange 120 extends upwardly at a constant angle along the periphery of the container 100 at each radial position, and the container is substantially circular, the flange 120 may define a substantially conical region that extends about at least a majority of the periphery of the base 110. Other arrangements are also contemplated.

The base flange 120 may further comprise a free edge 122 that defines at least a portion of the outermost perimeter of the base 110. In some embodiments, the free edge 122 may extend about at least a majority of the outermost periphery of the sidewall 114. In the illustrated embodiment, for example, the free edge 122 extends about the outermost periphery of the sidewall 114 everywhere other than at the hinged portion 105. In other embodiments, the free edge 122 may extend about the entirety of the outermost periphery of the sidewall 114. The free edge 122 of the base flange 120 may therefore extend about at least a majority, up to and including the entirety, of the outermost perimeter of the base 110.

With continued reference to FIG. 1, in some embodiments, the base flange 120 includes a recessed region 124. The recessed region 124 may be offset from neighboring portions of the base flange 120. In some embodiments, at least a portion of the recessed region 124 defines a plane. For example, in the illustrated embodiment, the recessed region 124 defines a plane that is parallel to a plane that is defined by neighboring portions of the base flange 120. The illustrated recessed region 124 is downwardly offset but otherwise parallel to the neighboring portions of the base flange 120. Accordingly, the recessed region 124 may be below or otherwise spaced from or outside of a plane defined by at least a portion of remaining portions of the base flange 120. As further illustrated in FIG. 1, the free edge 122 may extend along the outermost periphery of the recessed region 124 as well as the outermost periphery of the neighboring portions of the base flange 120. The base flange 120 may also include optional friction features such as ribs 126.

The lid 130 can include a lid connection interface 132 that is configured to interact with a complementary or otherwise cooperative portion of the base 110. For example, the lid connection interface 132 may be configured to selectively couple with the base connection interface 118. In some embodiments, the connection interfaces 132, 118 are complementary in shape (see FIG. 7), and the lid connection interface 132 and the base connection interface 118 may be substantially the same shape, size and conformation. In some embodiments, the lid connection interface 132 may be configured to be received by the base connection interface 118, and it may be slightly larger than the base connection interface 118 to assist in providing a tight seal therewith. In other embodiments, the base connection interface 118 may be configured to be received by the lid connection interface 132.

The lid connection interface 132 may extend about at least a majority of the periphery of the lid 130. In some embodiments, the lid connection interface 132 may also extend about the entire periphery of the lid 130. When the container 100 is in a closed configuration, the lid 130 and the base 110 may be coupled or otherwise attached such that the cavity 116 defined by the base 110 is closed by the lid 130, or stated otherwise, is enclosed by the lid 130 and the base 110.

The lid 130 can include a lid flange 134 that may extend outwardly relative to the lid connection interface 132. In some embodiments, the lid flange 134 may be directly connected to an end of the lid connection interface 132. The lid flange 134 may have a free edge 136 that may define at least a portion of the outermost perimeter of the lid 130. In some embodiments, the lid free edge 136 may extend about at least a majority of, up to and including the entirety of, the outermost perimeter of the lid 130.

With continued reference to FIG. 1, and with additional reference to FIG. 2, at least a portion of the lid flange 134 can be flat or planer. For example, in the illustrated embodiment, the lid flange 134 defines a plane that is parallel to the plane defined by the majority of the base flange 120 when the container 100 is in the closed pre-use configuration shown in FIG. 2. The planar portion of the lid flange 134 may extend about at least a majority of the perimeter of the lid 130. In some embodiments, at least a majority of the lid flange 134 may be substantially planar. In yet other embodiments, only a portion of the lid flange 134 may be substantially planar.

In other embodiments, the lid flange 134 may have configurations that are non-planar and/or multi-planar. For example, the lid flange 134 may extend upwardly at an angle relative to a horizontal plane (e.g., at an angle no less than about 30, 45, 60, or 75 degrees) when the container 100 is in the closed pre-use configuration shown in FIG. 2. Depending on the shape of the container, the lid flange 134 may have substantially planar regions, substantially conical regions, and or regions that define other shapes. For example, where the lid flange 134 extends upwardly at a constant angle along the periphery of the container 100 at each radial position, and the container is substantially rectangular, the upwardly extending flange 134 may define a different plane along each of the linear regions of the rectangle, and the flange 134 may define substantially conical regions at the corners that connect adjacent planar regions. As another example, where the lid flange 134 extends upwardly at a constant angle along the periphery of the container 100 at each radial position, and the container is substantially circular, the flange 134 may define a substantially conical region that extends about at least a majority of the periphery of the base 110. In various of the foregoing embodiments, the lid flange 134 may be substantially parallel to the base flange 120, whether in the planar or non-planar regions. Other arrangements are also contemplated.

With continued reference to FIGS. 1 and 2, the lid 130 can also include a lid tab 140. The tab may have any suitable shape. For example, FIGS. 14-17A show an embodiment with a lid tab 340 that has a different shape relative to lid tab 140. The tab 140 can have opposite surfaces 146, 147 that are configured to be gripped by a user and may optionally include friction features such as ribs. In the illustrated embodiment, the surface 146 is referred to as the lower surface and the surface 147 is referred to as the upper surface, with the terms “upper” and “lower” referring to the arrangement depicted in FIG. 1 in which the container 100 is in a closed orientation. In some embodiments, the tab 140 can be substantially planar, and in further embodiments, the tab 140 may be co-planar with the lid flange 134. In some embodiments, the tab 140 may be connected to, integral with, or otherwise associated with the lid flange 134. The free edge 136 of the lid 130 may extend along a periphery of the tab 140.

The lid flange 134 may have a weakened region that borders a portion of the tab 140. This weakened region 134 may allow for controlled separation (e.g., tearing) of a portion of the tab 140 from the lid flange 134. The weakened region 134 may further act as an indicator for demonstrating that the container 100 has been opened or otherwise tampered with, as discussed further below.

FIG. 1 depicts the container 100 in an initial closed configuration, which may also be referred to as a closed pre-use configuration. In the illustrated embodiment, the tab 140 is positioned over the recessed region 124 of the base flange 120. By positioning the tab 140 over the recessed region 124, the tab 140 may cooperate with the recessed region 124 to define or create an opening 125 that is accessible from a lateral side of the container 100. For example, due to the expanded spacing between the lid flange 134 and the base flange 120 in the vicinity of the recessed region 124, a user to insert a portion of a finger (e.g., a tip or a side portion of a thumb or index finger) between the free edge 136 of the lid 130 and the free edge 122 of the base 110 and into the opening 125 so as to grasp the opposite surface 146, 147 of the tab 140. In various embodiments, opening 125 has a height H of no less than about 1, 2, 3, 4, 5, 10, 15, or 20 millimeters; no greater than about 1, 2, 3, 4, 5, 10, 15, or 20 millimeters; or between about 1 and about 20 millimeters, between about 1 and about 15 millimeters, or between about 1 and about 10 millimeters. In some embodiments, the height H is about 2.2 millimeters.

As further shown in FIG. 6A, the lid 130 may include a weakened region 142 that borders a portion of the tab 140. The weakened region 142 may include any suitable form of weakening, such as a frangible line, a line of perforation, and/or a region of reduced thickness. In the illustrated embodiment, the weakened region 142 comprises a line of perforation 143. The weakened region 142 can permit controlled separation of the tab 140 from a neighboring portion of the lid flange 134. The weakened region 142 can be situated so as to prevent full separation of the tab 140 from the lid flange 134. For example, as shown in FIG. 1 and FIG. 6A, the illustrated line of perforation does not extend all the way to the outer edge 136 of the lid flange 134. As a result, the material of which the lid flange 134 is formed (e.g., plastic) can act as a stop to prevent tearing to extend beyond the end of the line of perforation 143. In various embodiments, a width, thickness, and/or strength of a portion of the material that is positioned between the end of the line of perforation 143 and the outer edge of the lid flange 134 can be sufficient to prevent further tearing once the perforated portion has been separated. In view of the foregoing, the tab 140 may be configured to be partially separated from a neighboring portion of the lid flange 134 along the weakened region 142 yet remain coupled with the lid 130 and assist in uncoupling the lid 130 from the base 110 when being pulled upon by a user.

Separation of the tab 140 along the weakened region 142 can indicate whether the container has been opened or otherwise tampered with. For example, separation of the tab 140 along the weakened region 142 may indicate that the lid 130 has been uncoupled from the base 110 to transition out of the closed pre-use configuration, as discussed further below with respect to FIG. 3. In the illustrated embodiment, as depicted in FIG. 1 the lid 130 has been closed to the base 110 after an initial filling of the base 110, but the lid 130 has not yet been uncoupled from the base 110, as evidenced by the fact that the weakened region 142 is unbroken.

An arrangement such as depicted in FIGS. 2 and 3 can be intuitive for a user to manipulate. For example, some known containers include a tab at an edge thereof that a user grasps in order to open the container. The user can generally grasp such a tab directly from the outer edge of the container, such as by advancing a finger radially inwardly under the tab. The user may pinch opposite surfaces of the tab between two fingers (e.g., an index finger and a thumb) and pull on the tab to open the container. With an arrangement such as shown in FIG. 1, the user can intuitively understand operation of the tamper-evident tab 140. The user can naturally access opposing surfaces of the tab directly from the outer edge of the container 100 by inserting a finger into the opening 125 to grasp the opposite surfaces 146, 147 of the tab 140, and then the user can pull upwardly on the tab 140 in a typical fashion.

In some embodiments, the container 100 can include further features to aid the user in readily using the tab 140. For example, the tab 140 may include any suitable indicia for indicating that the container 100 is opened by pulling on the tab 140. The tab 140 may include writing, coloring, or other instructive markings. In the embodiment illustrated in FIGS. 14-17A, the tab 140 is colored (e.g., with ink of any desired color—blue, etc.) to draw the user's attention to the tab 140. In the illustrated embodiment, other portions of the container 100 may be substantially transparent or translucent, such that the colored tab 140 may highly contrast with the remaining portions of the container 100.

In some embodiments, such as that illustrated in FIG. 3, the tab 140 can be positioned above the base flange 122, and the base flange 122 can extend outwardly at least slightly beyond a profile of the tab 140. Such an arrangement can inhibit inadvertent contact with the tab 140 that might break the weakened area 142. For example, the base flange 122 may act as a guard against bumping of the tab 140 that might otherwise result from transport or handling of the container 100.

FIG. 8A is a cross-sectional view of a portion of the container 100 further illustrating the opening 125 or gap created between the tab 140 and the recessed region 124 of the base flange 120. FIG. 8A also depicts an illustrative example of the manner in which the base connection interface 118 and the lid connection interface 132 may be selectively coupled to one another thereby attaching the lid 130 to the base 110 while the container 100 is in a closed configuration. In particular, in the illustrated embodiment, the base connection interface 118 defines a rounded recess 160 and the lid connection interface 132 defines a rounded protrusion 162. The rounded recess 160 is substantially complementary to the rounded protrusion 162 and is configured to receive the rounded protrusion 162 therein in locking engagement. Any other suitable locking configuration is contemplated.

FIG. 8B is a cross-sectional view of another portion of the container 100 when the container is in the closed configuration of FIG. 1. The portion of the container 100 that is depicted is at a position spaced from the tab 140. As shown, the lid flange 134 can be positioned above the base flange 120. The lid flange 134 may be recessed relative to the base flange 120. In the illustrated arrangement, both the free edge 136 of the lid flange 134 and the free edge 122 of the base flange 120 are exposed so as to be contactable by a user. However, in the illustrated embodiment, the relative dimensions of the lid flange 134 and the base flange 120 are such that the flanges 120, 134 cannot be adequately grasped in order to separate the lid 130 from the base 110. Accordingly, it may be difficult to separate the lid 130 from the base 110 or otherwise open the container 100 without the use of the tab 140. In some instances, attempts to grasp the flanges 120, 134 in regions spaced from the tab 140, such as shown in FIG. 5, can bend, distort, or otherwise plastically deform the flanges 120, 134 to indicate that an access attempt or event has taken place.

As shown in FIG. 8B, a plane defined by the base flange 120 can be parallel to a plane defined by the lid flange 134. Other arrangements, including other parallel arrangements, are also possible (such as discussed above).

FIG. 2 depicts the tamper evident container 100 in the closed pre-use configuration. The tab 140 has been lifted so as to separate it from neighboring portions of the lid flange 120. As can be seen, the weakened region 142 has been broken and the tab 140 has been lifted in the direction indicated by the arrow. Accordingly, the separation of the tab 140 along the weakened region 142 indicates that the container 100 may have been tampered with and that the lid 130 may have been uncoupled from the base 110. As further shown, the tab 140 is bent relative to the neighboring portions of the lid flange 134. In the illustrated embodiment, although the tab 140 has been bent, the tab 140 still remains substantially planar, although the plane that it defines is angled relative to the plane of the neighboring portions of the lid flange 134. The tab 140 may continue to be grasped by a user, and additional pulling can uncouple the lid 130 from the base 110 into the arrangement shown in FIG. 7.

In some embodiments, pulling on the tab 140 into the position shown in FIG. 6 can plastically deform at least a portion of the lid flange 134. For example, in some embodiments, the tab 140 may remain in the lifted position due to the plastic deformation, such as permanent bending.

FIG. 3 depicts the tamper evident container 100 in an open post-use configuration. As can be seen in FIG. 2, following separation of the tab 140 along the weakened region, the tab 140 may be grasped and pulled in the direction of the arrow by a user such that the lid 130 may be removed from the base 110.

After the container 100 has been transitioned to the open post-use configuration, it may be closed again, and thereby transitioned to a closed post-use configuration. For example, the connection interfaces 118, 132 and the base 110 and the lid 130, respectively, can be configured to repeatedly engage with each other and disengage from each other. When in the closed post-use configuration, the tab 140 may remain in a displaced state. For example, in some embodiments, the container 100 may look substantially like what is depicted in FIG. 4, with the tab 140 in a raised or lifted state. In other embodiments, the tab 140 may return to a coplanar state with neighboring portions of the lid flange 134, or the tab 140 may otherwise be generally continuous with the neighboring portions of the lid flange 134, although the broken or torn weakened area may remain in a severed state to indicate that an opening event has occurred.

Lid tab includes legs 148 a and 148 b with terminal portions 149 a and 149 b that extend to stops, as described above. Terminal portions 149 a and 149 b become elongated when lid 130 is pivoted to open container 100. Terminal portions 149 a and 149 b extend beyond their elastic limit and yet remain sufficient structural integrity to allow lid tab 140 to be grasped and overcome the interaction of the lip seal. Once the line of weakness or perforation 143 has been opened, an opening 141 is formed and the legs 148 a and 148 b form a stirrup-like configuration. In one embodiment it takes about 2 lbs to deform terminal portions 149 a and 149 b and about 5 lbs to open the container. One of the advantages of this configuration is that the deformation and opening occur in the same movement. Also, any jagged edges perforation 143 are not exposed.

FIGS. 10-12 depict another embodiment of a tamper evident container 200 and FIGS. 14-17A depict an additional embodiment of a tamper evident container 300. The container 200 and container 300 can resemble the container 100 discussed above with respect to FIGS. 1-8B. It will be appreciated that the illustrated embodiments may have analogous features. Accordingly, like features are designated with like reference numerals, with the leading digits incremented to “2” or “3”. Relevant disclosure set forth above regarding similarly identified features thus may not be repeated hereafter. Moreover, specific features of the container and related components shown in FIGS. 10-12 and FIGS. 14-17A may not be shown or identified by a reference numeral or specifically discussed in the written description that follows. However, such features may clearly be the same, or substantially the same, as features depicted in other embodiments and/or described with respect to such embodiments. Accordingly, the relevant descriptions of such features apply equally to the features of the container 200 and container 300. Any suitable combination of the features, and variations of the same, described with respect to the container 100 and components illustrated in FIG. 1, can be employed with the container and components of FIG. 2, and vice versa. This pattern of disclosure applies equally to further embodiments depicted in subsequent figures and described hereafter.

Any methods disclosed herein comprise one or more steps or actions for performing the described method. The method steps and/or actions may be interchanged with one another. In other words, unless a specific order of steps or actions is required for proper operation of the embodiment, the order and/or use of specific steps and/or actions may be modified.

References to approximations are made throughout this specification, such as by use of the terms “about” or “approximately.” For each such reference, it is to be understood that, in some embodiments, the value, feature, or characteristic may be specified without approximation. For example, where qualifiers such as “about,” “substantially,” and “generally” are used, these terms include within their scope the qualified words in the absence of their qualifiers. For example, where the term “substantially planar” is recited with respect to a feature, it is understood that in further embodiments, the feature can have a precisely planar configuration.

Reference throughout this specification to “an embodiment” or “the embodiment” means that a particular feature, structure or characteristic described in connection with that embodiment is included in at least one embodiment. Thus, the quoted phrases, or variations thereof, as recited throughout this specification are not necessarily all referring to the same embodiment.

Similarly, it should be appreciated that in the above description of embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure. This method of disclosure, however, is not to be interpreted as reflecting an intention that any claim require more features than those expressly recited in that claim. Rather, as the following claims reflect, inventive aspects lie in a combination of fewer than all features of any single foregoing disclosed embodiment.

The claims following this written disclosure are hereby expressly incorporated into the present written disclosure, with each claim standing on its own as a separate embodiment. This disclosure includes all permutations of the independent claims with their dependent claims. Moreover, additional embodiments capable of derivation from the independent and dependent claims that follow are also expressly incorporated into the present written description.

Recitation in the claims of the term “first” with respect to a feature or element does not necessarily imply the existence of a second or additional such feature or element. Elements specifically recited in means-plus-function format, if any, are intended to be construed in accordance with 35 U.S.C. §112 ¶6. Embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows. 

1. A tamper-evident container comprising: a base comprising: a bottom end; a sidewall extending upwardly from the bottom end to define a cavity; a base connection interface at an upper end of the sidewall that extends about at least a majority of a periphery of the sidewall; and a base flange extending outwardly relative to the connection interface, the base flange comprising a free edge that defines at least a portion of an outermost perimeter of the base; and a lid comprising: a lid connection interface configured to selectively couple with the base connection interface to attach the lid to the base in a configuration that closes the cavity of the base; and a lid flange extending outwardly relative to the connection interface of the lid, the lid flange comprising: a free edge that defines at least a portion of an outermost perimeter of the lid; a tab that comprises an upper surface and a lower surface opposite the upper surface, wherein the free edge extends along a periphery of the tab; and a weakened region that borders a portion of the tab; wherein, when the lid is coupled to the base in a closed pre-use configuration: the lid flange is above the base flange; the tab extends substantially parallel to the base flange; the lower surface of the tab is accessible from a lateral side of the container such that a finger of a user can be moved in a radially inward direction that is parallel to the base flange to pass under the free edge of the lid flange and contact the lower surface of the tab; and the tab is configured to be separated from a neighboring portion of the lid flange along the weakened region yet remain coupled with the lid and assist in uncoupling the lid from the base, wherein separation of the tab along the weakened region indicates that the lid has been uncoupled from the base to transition from the closed pre-use configuration to an open configuration.
 2. The container of claim 1, wherein the base flange comprises a recessed region that is downwardly offset from neighboring portions of the base flange, wherein the free edge of the base flange extends along a periphery of the recessed region and along a periphery of portions of the base flange that neighbor the recessed region.
 3. The container of claim 2, wherein, when the lid is coupled to the base in the closed pre-use configuration, the tab is positioned over the recessed region of the base and cooperates therewith to define an opening that is accessible from a lateral side of the container to permit a user to insert a finger between the free edges of the lid and the base and into the opening.
 4. The container of claim 1, wherein the bottom end defines a plane to permit the base to rest on a horizontal surface, wherein at least a majority of the base flange defines a plane that is parallel to the plane defined by the bottom end, and wherein the recessed region of the base flange is outside of the plane defined by other portions of the base flange.
 5. The container of claim 4, wherein the recessed region of the base flange defines a planar portion that is parallel to and offset from the plane defined by other portions of the base flange.
 6. The container of claim 1, wherein an entirety of the lower surface of the tab faces an upper surface of the base flange, and wherein the base flange is flexible so as to be downwardly displaceable to expose the lower surface of the tab.
 7. The container of claim 1, wherein an entirety of the free edge of the lid flange is exposed when the lid is coupled to the base in a closed pre-use configuration.
 8. The container of claim 1, wherein at least a majority of the lid flange defines a plane, and wherein the tab is within the plane when the container is in the closed pre-use configuration.
 9. The container of claim 1, wherein the relative dimensions of the base flange and the lid flange are such that the free edge of the lid and the free edge of the base can be touched by a user, but cannot be grasped to separate the lid from the base.
 10. The container of claim 1, wherein after the initial opening, the tab is bent relative to the neighboring portions of the lid flange.
 11. The container of claim 1, wherein, when the container is in the closed pre-use configuration, the lid flange is planar and the tab is co-planar therewith.
 12. The container of claim 11, wherein after the initial opening, the tab remains substantially planar and is angled relative to the plane of the neighboring portions of the lid flange.
 13. The container of claim 1, wherein the free edge of lid extends about at least a majority of the outermost perimeter of the lid.
 14. The container of claim 1, wherein the free edge of the base extends about at least a majority of the outermost perimeter of the base.
 15. The container of claim 1, wherein the base flange is at a higher position than is the connection interface, relative to the bottom end of the base.
 16. The container of claim 1, wherein the base flange is directly connected to an upper end of the base connection interface.
 17. The container of claim 1, wherein the base connection interface extends about entire periphery of the sidewall.
 18. The container of claim 1, wherein the base connection interface extends around only a portion of the sidewall.
 19. The container of claim 1, wherein the base and lid are permanently coupled to each other via a hinge. 